The roller of CC type spherical roller bearings is symmetrical ,inner ring without rib,each row of rollers with stamping steel cage .The  roller and raceway surface of CC type bearing has been optimized processed  , this  is helpful for roller guidance and reduce friction . For example , 21309 CC/W33 bearing, the suffix CC means stamping steel cage, W33 means the bearing outer ring has oil groove along with 3 oil holes.

    WSBC 21309 CC/W33 widely used in Gear box ,metallurgical industry,paper machinery, mining machinery, Enough stock ,fast delivery , high quality and competitive price will help you save much factory production cost.If you want to know more about WSBC 21309 CC/W33 , welcome you contact us freely.